> is there a possibility to tell pf.conf to accept malformed packets.

turn off 'reassemble tcp' in your scrub rule if you don't want to
validate the packets.
 
> pfctl -x loud tells me:
> Aug 24 09:50:43 gw-bonn /bsd: pf_normalize_tcp_stateful: Did not receive 
> expected RFC1323 timestamp
> 09:50:43.291716 160.44.70.4.www > 192.168.100.1.49653: F 105:105(0) ack 
> 498 win 64091 <nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop> (DF)

That's not the offending packet.  We'll only check RFC1312 PAWS
timestamps on data packets while the connection is in the established
state.  That packet isn't bearing any data.

.mike

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